Question

Light of wavelength 600 nm is incidence on aperture of 2 nm Calculate distance upto lught can travel.

Answer 1

Hello. ☺



According to the question , we have to take out FRESNEL distance.


We just have to apply the formulae -



D = d^2/¢


¢ = 600 * 10^-9

d = 2 × 10^-3



Distance after solving it will be = $\huge{6.67m}$

Answer 2

As we know
D=d²/lamda
lamda=600×10^-9m
D=2×10^-9m
d=6.68m